Short Answer for Engineers and Buyers
A tool history log is a controlled engineering record used to track Tool ID, cumulative shots, PM events, repairs, engineering changes, replaced components, inspection results, and next PM due for an injection mold. It gives maintenance, quality, and sourcing teams traceability across the full tooling lifecycle, especially for export, transfer, and customer-owned molds.
Why This Is More Than a Maintenance Note
For engineering, quality, and sourcing teams, an injection mold history log is not an informal shop-floor note or whiteboard summary. It is a controlled record used to track what happened to the mold and whether the tool was cleared for production again. When this record is incomplete or unmanaged, supplier accountability becomes unclear and tool transfer, audit review, and restart approval become harder to control. It serves as a controlled asset record that tracks shot history, repairs, engineering changes, verification status, and qualification baselines throughout the tooling lifecycle.
For multi-cavity tools and engineering resin programs, every PM event, repair, insert replacement, welding repair, hot runner maintenance action, and release decision should be recorded in one controlled log. Linking the record to a planned injection mold maintenance schedule makes it possible to compare actual shot accumulation, repair frequency, and wear history against the planned PM interval. Every localized intervention logs the precise cumulative shot count, allowing data-driven decisions on tool steel fatigue and wear-part cycles.
Furthermore, maintaining strict traceability requires logging a detailed cavity-specific issue history. Broad repair updates like "polished core" or "replaced ejector pin" are insufficient for root-cause tracking. A usable record should identify the affected cavity or insert, the observed issue, the root cause, the action taken, and the verification result after repair. When the mold is changed, the record should reference the related injection molding ECN form so the tooling update can be matched to the latest approved part drawing revision.
This record becomes most important during tool transfer, audit review, or restart after repair. Before the mold returns to production, the log should show what was changed, how it was checked, and who approved release. The release sign-off should confirm that cooling circuit leak tests, hot runner electrical checks, and dimensional verification were completed as applicable before the mold returned to production. This framework identifies the responsible tooling, quality, or production approver before the mold is cleared to return to the press. Enforcing this framework supports mold traceability, cavity ID tracking, and revision control, helping procurement teams review tool readiness and transfer risk with less ambiguity via unified mold traceability, cavity ID, and revision control protocols.